Thermodynamic study onthesolubility of Ca and Al in CaO-SiO2-Al2O3 slag system

Eun Jin Jung; Sang Hoon Lee; Wan Ho Kim; Dong Jun Min

doi:10.3365/KJMM.2015.53.5.352

Thermodynamic study onthesolubility of Ca and Al in CaO-SiO₂-Al₂O₃ slag system

Eun Jin Jung, Sang Hoon Lee, Wan Ho Kim, Dong Jun Min

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Thermodynamic study on CaO-SiO₂-Al₂O₃ slag system was carried out to understand the refining ability of Ca and Al in ferrosilicon. The effect of slag composition and oxygen partial pressure on refining ability of slag was also thermodynamically evaluated. Experimental results indicated that equilibrium concentrations of Ca and Al are both decreased with increasing SiO₂ activity of slag and oxygen partial pressure. Also, the effect of activity coefficients of Ca and Al in molten alloy was not significant, while activities of each component in slag were important determining factors. Refining ability of Ca and Al of CaO-SiO₂-Al₂O₃ slag from ferrosilicon is possibly increased by controlling interfacial oxygen partial pressure and activities of components of slags.

Original language	English
Pages (from-to)	352-358
Number of pages	7
Journal	Journal of Korean Institute of Metals and Materials
Volume	53
Issue number	5
DOIs	https://doi.org/10.3365/KJMM.2015.53.5.352
Publication status	Published - 2015

Bibliographical note

Publisher Copyright:
Copyright © The Korean Institute of Metals and Materials.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Modelling and Simulation
Surfaces, Coatings and Films
Metals and Alloys

Access to Document

10.3365/KJMM.2015.53.5.352

Cite this

@article{b8ad97072a014a478e3186f318f892bf,

title = "Thermodynamic study onthesolubility of Ca and Al in CaO-SiO2-Al2O3 slag system",

abstract = "Thermodynamic study on CaO-SiO2-Al2O3 slag system was carried out to understand the refining ability of Ca and Al in ferrosilicon. The effect of slag composition and oxygen partial pressure on refining ability of slag was also thermodynamically evaluated. Experimental results indicated that equilibrium concentrations of Ca and Al are both decreased with increasing SiO2 activity of slag and oxygen partial pressure. Also, the effect of activity coefficients of Ca and Al in molten alloy was not significant, while activities of each component in slag were important determining factors. Refining ability of Ca and Al of CaO-SiO2-Al2O3 slag from ferrosilicon is possibly increased by controlling interfacial oxygen partial pressure and activities of components of slags.",

keywords = "Ferrosilicon, Metals, Purification, Thermodynamics properties",

author = "Jung, {Eun Jin} and Lee, {Sang Hoon} and Kim, {Wan Ho} and Min, {Dong Jun}",

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AU - Jung, Eun Jin

AU - Lee, Sang Hoon

AU - Kim, Wan Ho

AU - Min, Dong Jun

PY - 2015

Y1 - 2015

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AB - Thermodynamic study on CaO-SiO2-Al2O3 slag system was carried out to understand the refining ability of Ca and Al in ferrosilicon. The effect of slag composition and oxygen partial pressure on refining ability of slag was also thermodynamically evaluated. Experimental results indicated that equilibrium concentrations of Ca and Al are both decreased with increasing SiO2 activity of slag and oxygen partial pressure. Also, the effect of activity coefficients of Ca and Al in molten alloy was not significant, while activities of each component in slag were important determining factors. Refining ability of Ca and Al of CaO-SiO2-Al2O3 slag from ferrosilicon is possibly increased by controlling interfacial oxygen partial pressure and activities of components of slags.

KW - Ferrosilicon

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KW - Purification

KW - Thermodynamics properties

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